CN212403259U - Internal pulley block trolley - Google Patents

Abstract

Built-in assembly pulley trolley, including base and davit assembly, wherein the davit assembly articulates and installs on the base, including controlling the handle, the front end of davit assembly is equipped with the lifting hook, still articulates between davit assembly and base has lift cylinder, the utility model discloses an actively the effect lies in: the hydraulic system has the advantage of avoiding overweight hoisting, and because the hoisting power is provided by the hydraulic system, when hoisting goods with unknown weight, even if the weight of the goods exceeds the load capacity of the hydraulic system, the hydraulic system can automatically release pressure and discharge oil, so that the situation that the motor of the electric winch is burnt out when the crane is overloaded and hoisted is avoided. The winding machine also omits mechanisms such as a winding drum, a motor, a speed reducer, a braking mechanism, a rope guider and the like, and has the advantages of simple structure, small volume and convenient maintenance.

Description

Internal pulley block trolley

Technical Field

The utility model belongs to the technical field of loop wheel machine technique and specifically relates to a built-in assembly pulley trolley.

Background

When hoisting and transporting goods, the existing crane is generally fixed at a place for hoisting operation, and then the subsequent transportation of the goods is completed by rotating the boom or by means of other transportation equipment. The crane has the advantages that the crane boom is rotated to transport cargos, the crane boom cannot adapt to long-distance transportation, meanwhile, the crane boom has higher space requirements for the operation environment, cargo transportation is completed by means of other transportation equipment, cargos need to be unloaded onto the transportation equipment firstly, secondary loading and unloading are needed after the transportation is finished, more labor and production cost are consumed, the transportation efficiency is lower, and how to solve the problems is a significant problem faced by the existing crane.

The contents of the utility model

In order to solve the problems, an object of the present invention is to provide a trolley with built-in pulley blocks, which can complete the lifting and transportation of goods without rotating the suspension arm. The built-in pulley block trolley can lift the goods and place the goods on the trolley body below the suspension arm, so that the whole built-in pulley block trolley can move together with the lifted goods. In addition, the trolley with the built-in pulley block can turn in situ, the radius of a corner is zero, the steering is flexible, the requirement on the operating environment is low, and the efficiency of the whole hoisting operation can be obviously improved while the labor force is saved.

The technical scheme who solves its technical problem and adopt of the utility model is: the utility model discloses a trolley with built-in pulley block, which comprises a base and a suspension arm assembly, wherein the suspension arm assembly is hinged on the base and comprises a control handle, the front end of the suspension arm assembly is provided with a hook, a lifting oil cylinder is hinged between the suspension arm assembly and the base, the front end of the lower side of the base is provided with a steering mechanism, the rear end of the lower side of the base is provided with a driving wheel, the driving wheel is connected with the control handle through a transmission mechanism, the base is also provided with a hydraulic station which can control the steering mechanism to steer, the steering mechanism comprises two steering wheels, the steering wheels are both arranged on the base through rotating shafts, the rotating shafts at the lower side of the base are both fixedly provided with connecting plates, a same transmission rod is hinged between the two connecting plates, the lower side of the base is hinged with a steering, the piston rod can drive the steering wheels at two sides to synchronously steer when stretching. The suspension arm assembly comprises a first suspension arm hinged on the base, a lifting oil cylinder is hinged between the first suspension arm and the base, a second suspension arm capable of moving along the first suspension arm is installed inside the first suspension arm in a matched mode, a limiting plate is installed at the upper end, extending out of the first suspension arm, of the second suspension arm, a driving oil cylinder is hinged between the limiting plate and the first suspension arm, a third suspension arm capable of moving along the second suspension arm is installed inside the second suspension arm in a matched mode, a fourth suspension arm capable of moving along the third suspension arm is installed inside the third suspension arm in a matched mode, a lifting hook is arranged at the upper end, extending out of the third suspension arm, of the fourth suspension arm, a first driven device is installed between the second suspension arm and the third suspension arm and comprises a first pulley fixedly installed inside the second suspension arm, a first transmission rope is wound on the first pulley, one end of the first transmission rope is fixedly installed on the first suspension arm, and the other end, the second driven device is installed between the third suspension arm and the fourth suspension arm and comprises a second pulley fixedly installed inside the third suspension arm, a second transmission rope is wound on the second pulley, one end of the second transmission rope is fixedly installed on the second suspension arm, the other end of the second transmission rope is fixedly installed on the fourth suspension arm, when the driving oil cylinder pushes the second suspension arm to stretch out of the first suspension arm, the third suspension arm can stretch out of the second suspension arm synchronously, and the fourth suspension arm can stretch out of the third suspension arm synchronously. The hoisting machine comprises a hoisting machine main body, a telescopic oil cylinder is arranged on the first mounting plate, a second mounting plate is fixed on a piston rod of the telescopic oil cylinder and can move in the hoisting arm assembly, a folding arm is also fixedly arranged at the front end of the hoisting arm assembly, a first fixed pulley and a second fixed pulley are arranged on two sides of the folding arm, pulley block mechanisms are respectively arranged on two sides of the first mounting plate and the second mounting plate and comprise a first front wheel set arranged on the side surface of the second mounting plate and a first rear wheel set arranged on the side surface of the first mounting plate, wherein the number of wheels of the first rear wheel set is always one more than that of the first front wheel set, hoisting ropes are fixedly arranged on two sides of the second mounting plate, firstly, and then, after bypassing the first front wheel set, the hoisting ropes are wound back to the first rear wheel set, and then the lifting arm assembly extends out of the lifting arm assembly to wind around the first fixed pulley and the second fixed pulley and then is connected to the lifting hook. The pivot of first rear wheel group articulates installs on the davit assembly, still is equipped with two sets of locking positioner between flexible hydro-cylinder and davit assembly, and every locking positioner of group all includes the hydro-cylinder locating piece of fixed mounting on flexible hydro-cylinder, and corresponding to the position of hydro-cylinder locating piece, gusset plate on the davit assembly, gusset plate internal thread fit have the briquetting, the briquetting can rotate to compressing tightly the hydro-cylinder locating piece, installs hexagon bolt in the briquetting, has seted up on the hydro-cylinder locating piece with hexagon bolt matched with screw, is equipped with first clamp plate between hexagon bolt's tip and the gusset plate, hexagon bolt can rotate and fix flexible hydro-cylinder and davit assembly in getting into the hydro-cylinder locating piece. The lifting rope is sequentially wound around the second rear wheel set, the second front wheel set, the first rear wheel set and the first front wheel set, and then the lifting rope is wound back to the first rear wheel set, and is connected to the lifting hook after being wound around the first fixed pulley and the second fixed pulley. The lifting rope of the pulley block mechanisms on two sides is the same, the middle position of the lifting rope is fixed at the bottom of the second mounting plate through a fastening device, the fastening device comprises a rope frame, a rope pressing block, an inclined iron and a fastening bolt, the bottom of the second mounting plate is also provided with a mounting groove matched with the fastening device, one end of the mounting groove is a first inclined plane matched with the inclined iron, the inclined iron is matched and mounted with the first inclined plane through the fastening bolt, the other end of the mounting groove is fixedly provided with the rope frame, the rope pressing block is arranged between the rope frame and the inclined iron, the two sides of the rope frame are provided with first through holes matched with the lifting rope, the middle position of the rope frame close to one end of the rope pressing block is provided with a convex block, the convex block is provided with a second through hole matched with the lifting rope, the second through hole is vertical to the first through hole, the end of the rope pressing block close to the rope frame is provided with a pressing groove matched with the, one end of the rope pressing block, which is close to the wedge, is provided with a second inclined plane matched with the wedge, and when the fastening bolt is rotated to press the wedge, the pressing groove on the rope pressing block can press and fix the lifting rope in the second through hole. The lifting rope of the pulley block mechanisms on the two sides is the same, the third pulley which is horizontally arranged is installed at the bottom of the second installation plate, and the lifting rope is wound on the third pulley. The lifting hook comprises a hook body, the hook body is installed in first counter weight iron in a matched mode, second counter weight iron is installed on the first counter weight iron through a bolt, a bearing disc is arranged between the first counter weight iron and the second counter weight iron, a gap is reserved between the bearing disc and the second counter weight iron, three check blocks are installed at the bottom of the second counter weight iron, wedge irons are arranged between the two check blocks, a second pressing plate is fixedly installed at the bottoms of the check blocks and the wedge irons, a third through hole matched with a lifting rope is further formed in the second counter weight iron, and the lifting rope penetrates through the third through hole and can be fixed on the second counter weight iron through the wedge irons. The transmission mechanism comprises a vertical shaft arranged on the control handle, a first gear is arranged at the bottom of the vertical shaft, a first rack meshed with the first gear is arranged on the base, a second gear is arranged on a rotating shaft of the driving wheel, a second rack meshed with the second gear is arranged on the base, the first rack and the second rack are fixedly connected, and a guide plate matched with the first rack and the second rack is further arranged on the base. The utility model discloses an actively the effect lies in: a built-in assembly pulley trolley, just can accomplish lifting by crane and the transportation of goods under the condition of not rotating the davit, whole built-in assembly pulley trolley can together remove with the goods of hoist and mount, the range of turning to during removal is great and nimble, does not have special requirement to the environment of operation, can also show the efficiency that improves whole handling operation when the labour demand obtains reducing. The driven device installed between the multi-stage suspension arms can ensure that all the suspension arms are completely extended out under the driving of one driving oil cylinder, the structure setting of the suspension arms is simplified, the two sides of the winch inside the suspension arms are respectively provided with the multi-stage wheel sets, the suspension ropes are wound on the multi-stage wheel sets back and forth, the telescopic distance of the suspension ropes can be controlled to be longer on the premise that the winch oil cylinder has the same telescopic stroke, and the application range of the whole device is greatly enlarged. The main parts of the winch of the trolley with the built-in pulley block are distributed along the length direction, the whole shape is slender, the winch is convenient to install in the suspension arm, the space outside the suspension arm is not additionally occupied, and the enough space for containing hoisted goods can be formed on the body of the crane, so that the crane has double functions of hoisting and transporting, and is particularly suitable for small and medium-sized cranes. The hydraulic brake system is used for realizing brake braking, a brake pad is not needed, the problems that the brake pad is easy to wear and needs to be replaced frequently in the using process can be fundamentally solved, and the safety of hoisting operation can be greatly improved. The main parts of the hydraulic cylinder and the pulley block are the hydraulic cylinder and the pulley block, the structure is simple, the processing and manufacturing cost is low, and the service life is long. The hydraulic system has the advantage of avoiding overweight hoisting, and because the hoisting power is provided by the hydraulic system, when hoisting goods with unknown weight, even if the weight of the goods exceeds the load capacity of the hydraulic system, the hydraulic system can automatically release pressure and discharge oil, so that the situation that the motor of the electric winch is burnt out when the crane is overloaded and hoisted is avoided. The winding machine also omits mechanisms such as a winding drum, a motor, a speed reducer, a braking mechanism, a rope guider and the like, and has the advantages of simple structure, small volume and convenient maintenance.

Drawings

Fig. 1 is a schematic three-dimensional structure of the present invention; fig. 2 is a front view of the present invention; FIG. 3 is a right side view of FIG. 2; FIG. 4 is an enlarged view of a portion of FIG. 2 from the direction A; FIG. 5 is a schematic view of the internal section of the boom; FIG. 6 is an enlarged view of the cross-sectional view taken along line B-B in FIG. 5; FIG. 7 is a schematic structural diagram of another cutting mode of the interior of the suspension arm; fig. 8 is a schematic view of the structure of the hoist; FIG. 9 is an enlarged partial view of II of FIG. 8; FIG. 10 is an enlarged partial view of III of FIG. 8; FIG. 11 is a schematic view of the locking and positioning device; FIG. 12 is a schematic three-dimensional structure of the fastening device; fig. 13 is a schematic structural view of a rope holder; FIG. 14 is a schematic view of the same hoist rope mounted on a third sheave; FIG. 15 is a schematic view of the hook construction; FIG. 16 is a cross-sectional view taken along line C-C of FIG. 15; FIG. 17 is an enlarged partial view of I of FIG. 1; fig. 18 is a schematic diagram of the winding of a hoist rope, in which fig. 18B shows the sheave assembly mechanism including only a first front sheave assembly (431) and a first rear sheave assembly (411); as shown in fig. 18A, the wheel set mechanism includes a first front wheel set (431), a first rear wheel set (411), a second rear wheel set (412), and a second front wheel set (432); FIG. 19 is a schematic structural view of the fitting of the rope frame, the rope pressing block and the wedge; FIG. 20 is a schematic structural view of a wedge; FIG. 21 is a schematic structural view of a rope-pressing block; fig. 22 is a schematic diagram of the distribution of the wire ropes of the pulley block mechanism comprising only the first front wheel group (431) and the first rear wheel group (411); fig. 23 is a schematic distribution diagram of the wire rope of the pulley block mechanism including the first front wheel set (431), the first rear wheel set (411), the second rear wheel set (412) and the second front wheel set (432).

In the drawing, 1, a base 11, a counterweight 12, a hydraulic station 13, a steering mechanism 131, a rotating shaft 132, a connecting plate 134, a steering cylinder 136, a piston rod 14, a driving wheel 15, a lifting cylinder 2, a control handle 21, a vertical shaft 22, a first gear 23, a second gear 25, a transmission rod 135, a boom assembly 31, a first boom 32, a second boom 33, a fourth boom 35, a driving cylinder 36, a limiting plate 321, a first pulley 322, a second pulley 331, a second transmission rope 4, a main body 41, a first mounting plate 42, a telescopic cylinder 43, a second mounting plate 44, a folding arm 45, a second fixed pulley 46, a lifting rope 47, a first front pulley 431, a first rear pulley block 411, a second rear pulley block 432, a second front pulley block 412, a second rear pulley block 51, a lifting hook body 52, a first counterweight 53, a second counterweight 54, a disc 55, a second 58 third through hole 61 rope holder 62 rope pressing block 63 oblique iron 64 fastening bolt 65 mounting groove 66 first inclined surface 67 third pulley 611 first through hole 612 convex block 613 second through hole 621 pressing groove 622 second inclined surface 623 penetrating groove 71 cylinder positioning block 72 reinforcing plate 73 pressing block 74 hexagonal bolt 75 first pressing plate

Detailed Description

The utility model discloses a built-in assembly pulley trolley, as shown in figure 1, including base 1, control handle 2 and davit assembly 3. Wherein, the suspension arm assembly 3 is hinged on the base 1, and the front end of the suspension arm assembly 3 is provided with a lifting hook 5. A lifting oil cylinder 15 is hinged between the suspension arm assembly 3 and the base 1, and the lifting oil cylinder 15 extends out to push the suspension arm assembly 3 and the lifting hook 5 to swing and lift the goods. The front end of the lower side of the base 1 is provided with a steering mechanism 13. The rear end of the lower side of the base 1 is provided with a driving wheel 14, and the driving wheel 14 can be an existing electric vehicle motor and is provided with a rubber tire on the periphery. The drive wheel 14 is connected to the control handle 2 via a transmission. The base 1 is also provided with a balancing weight 11 and a hydraulic station 12, the hydraulic station 12 can control a steering mechanism 13 to steer, and the control handle 2 can control a driving wheel 14 to steer. The balancing weight 11 can reduce the gravity center of the trolley with the built-in pulley block and prevent the overturning phenomenon of the device when the goods are lifted. The hydraulic station 12 is provided with corresponding control switches, valves and oil paths, and the control switches can control the stretching of the oil cylinders to finish the hoisting of goods and the steering of the steering mechanism 13. The hydraulic control system for controlling the hydraulic cylinder is an existing hydraulic system.

As shown in fig. 4, the steering mechanism 13 includes two steering wheels 131, and each steering wheel 131 is mounted on the base 1 through a rotating shaft 132. The rotating shafts 132 on the lower side of the base 1 are fixedly provided with connecting plates 133, a same transmission rod 134 is hinged between the two connecting plates 133, and two ends of the transmission rod 134 are respectively hinged with the two connecting plates 133. A steering oil cylinder 135 is hinged on the lower side of the base 1, and the end of a piston rod 136 of the steering oil cylinder 135 is hinged on the transmission rod 134. When the piston rod 136 extends, the connecting plates 133 and the rotating shaft 132 on both sides can be driven by the transmission rod 134 to rotate in the same direction and at the same angle, so that the steering wheels 131 on both sides can be driven to steer synchronously. The boom assembly 3 can be placed on the front end of the base 1 after it has lifted the cargo. Adjustment steering mechanism 13 and the rotatable 90 degrees of drive wheel 14 can make whole built-in assembly pulley trolley carry out the sideslip along base 1's width direction, turn to and remove more in a flexible way, have improved the efficiency of goods hoist and mount transportation greatly, and wherein steering cylinder 135 can also be current cylinder or electric putter, but hydro-cylinder and hydraulic system are more fit for the design requirement of the utility model.

In order to simplify the driving structure on the boom assembly 3, the multi-stage boom can be synchronously extended and contracted by using one oil cylinder, as shown in fig. 5, 6 and 7, the boom assembly 3 includes a first boom 31 hinged on the base 1, a lifting oil cylinder 15 is hinged between the first boom 31 and the base 1, a second boom 32 capable of moving along the first boom 31 is installed inside the first boom 31 in a matching manner, a limiting plate 36 is installed at the upper end of the second boom 32 extending out of the first boom 31, and a driving oil cylinder 35 is hinged between the limiting plate 36 and the first boom 31. The cylinder body of the driving oil cylinder 35 is hinged with the first suspension arm 31, and the piston rod of the driving oil cylinder is hinged with the limiting plate 36. When the driving oil cylinder 35 is extended, the second suspension arm 32 can be synchronously driven to extend and retract relative to the first suspension arm 31.

As shown in fig. 5, a third boom 33 capable of moving along the second boom 32 is installed inside the second boom 32, a fourth boom 34 capable of moving along the third boom 33 is installed inside the third boom 33, the fourth boom 34 extends out of the upper end of the third boom 33 and is provided with a hook 5, wherein a first driven device is installed between the second boom 32 and the third boom 33, as shown in fig. 5 and 6, the first driven device comprises a first pulley 321 fixedly installed inside the second boom 32, a first transmission rope 322 is wound on the first pulley 321, one end of the first transmission rope 322 is fixedly installed on the first boom 31, and the other end of the first transmission rope 322 is fixedly installed on the third boom 33.

As shown in fig. 6 and 7, a second driven device is installed between the third boom 33 and the fourth boom 34, the second driven device includes a second pulley 331 fixedly installed inside the third boom 33, a second driving rope 332 is wound on the second pulley 331, one end of the second driving rope 332 is fixedly installed on the second boom 32, and the other end of the second driving rope 332 is fixedly installed on the fourth boom 34.

Analyzing the action linkage relation of the first driven device between the second boom 32 and the third boom 33: when the driving cylinder 35 pushes the second boom 32 to extend relative to the first boom 31, the first boom 31 is fixed, because the first pulley 321 is fixedly installed on the second boom 32, the first pulley 321 also extends relative to the first boom 31, one end of the first transmission rope 322 wound around the first pulley 321 is fixedly installed on the first boom 31 and can not move, and the other end is fixedly installed on the third boom 33, because the whole length of the first transmission rope 322 is not changed, the first pulley 321 can drive the third boom 33 to extend relative to the second boom 32 when extending relative to the first boom 31.

Similarly, the second driven device between the third boom 33 and the fourth boom 34 is analyzed, because the third boom 33 extends relative to the second boom 32, the second pulley 331 fixedly mounted on the third boom 33 also extends relative to the second boom 32, one end of the second transmission rope 332 wound on the second pulley 331 is fixedly mounted on the second boom 32, and the other end is fixedly mounted on the fourth boom 34, because the overall length of the second transmission rope 332 is not changed, when the second pulley 331 extends relative to the second boom 32, the fourth boom 34 is driven to extend relative to the third boom 33. Namely, when the driving oil cylinder 35 drives the second suspension arm 32 to extend out of the first suspension arm 31, the third suspension arm 33 can synchronously extend out of the second suspension arm 32, the fourth suspension arm 34 can synchronously extend out of the third suspension arm 33, and one oil cylinder can drive the multi-stage suspension arm to extend and retract.

A hoist main body 4 for driving a lifting rope 46 to extend and retract is installed inside the boom assembly 3, as shown in fig. 8, 9 and 10, the hoist main body 4 includes a first mounting plate 41 fixedly installed inside the boom assembly 3, a telescopic cylinder 42 is provided on the first mounting plate 41, a second mounting plate 43 is fixed on a piston rod of the telescopic cylinder 42, and the second mounting plate 43 is movable inside the boom assembly 3. A folding arm 44 is fixedly arranged at the front end of the boom assembly 3, a first fixed pulley 47 and a second fixed pulley 45 are arranged on two sides of the folding arm 44, a lifting rope 46 extending from the interior of the winch body 4 passes through the first fixed pulley 47 and the second fixed pulley 45 and then is connected with the lifting hook 5, wherein the folding arm 44 can be arranged at the front end of the fourth boom 34, namely the foremost position of the boom assembly 3.

The pulley block mechanism is all installed to the both sides of first mounting panel 41 and second mounting panel 43, and the pulley block mechanism is including installing the first front wheel group 431 in second mounting panel 43 side and installing the first rear wheel group 411 in first mounting panel 41 side, and wherein the number of wheels of first rear wheel group 411 is more one than the number of wheels of first front wheel group 431 all the time, has lifting rope 46 at the equal fixed mounting in both sides of second mounting panel 43, and lifting rope 46 is around between first front wheel group 431 and first rear wheel group 411, corresponding to the position of wheelset, still be equipped with the fender bracket with it matched with on the mounting panel, can prevent that lifting rope 46 from droing. The number of wheels of the first front wheel set 431 is at least one, the number of wheels of the first rear wheel set 411 is at least two, as shown in fig. 18B, the lifting rope 46 firstly bypasses the first rear wheel set 411, then bypasses the first front wheel set 431 and then bypasses the first rear wheel set 411, then extends out of the boom assembly 3 and bypasses the fixed pulley 47 and the fixed pulley 45 to be connected to the lifting hook 5, and the number of wheels of the first rear wheel set 411 is always one more than the number of wheels of the first front wheel set 431 in order to enable the lifting rope 46 to be bypassed back to the first rear wheel set 411 and then extend out of the boom assembly 3. As shown in fig. 9 and 10, the number of wheels of the first front wheel set 431 is three, the number of wheels of the first rear wheel set 411 is four, the ratio of the moving distance of the telescopic cylinder 42 to the telescopic distance of the lifting rope 46 is related to the number of wheels, and the larger the number of wheels is, the longer the telescopic distance of the lifting rope 46 is when the moving distance of the telescopic cylinder 42 is the same. The winch main body 4 arranged inside the boom assembly 3 can reduce the telescopic distance of the telescopic cylinder 42 to the maximum extent on the premise of ensuring that the telescopic length of the lifting rope 46 is enough, and can also reduce the length setting of the whole boom assembly 3.

In order to accurately mount the winch main body 4 in the boom assembly 3 and avoid the shaking phenomenon during the hoisting of goods, as shown in fig. 11, the rotating shaft of the first rear wheel set 411 is hinged to the boom assembly 3, the side wall of the boom assembly 3 is provided with mounting holes matched with the rotating shaft, two sets of locking and positioning devices are further arranged between the telescopic cylinder 42 and the boom assembly 3, each set of locking and positioning devices comprises a cylinder positioning block 71 fixedly mounted on the telescopic cylinder 42, a reinforcing plate 72 is arranged on the boom assembly 3 corresponding to the position of the cylinder positioning block 71, a pressing block 73 is in threaded fit with the reinforcing plate 72, the pressing block 73 can rotate to press the cylinder positioning block 71, an unthreaded hole is arranged in the pressing block 73, a hexagon bolt 74 is mounted in the unthreaded hole, a screw hole matched with the hexagon bolt 74 is arranged on the cylinder positioning block 71, and a first pressing plate 75 is arranged between the end of the hexagon bolt 74 and the reinforcing plate 72, the hexagon bolt 74 can rotate into the cylinder positioning block 71 to fix the telescopic cylinder 42 and the boom assembly 3.

When the telescopic oil cylinder is installed, firstly, the winch main body 4 is stretched into the suspension arm assembly 3, the rotating shaft of the first rear wheel set 411 is hinged to the suspension arm assembly 3, then the pressing blocks 73 are screwed into the reinforcing plates 72 on the two sides of the suspension arm assembly 3, the pressing blocks 73 on the two sides tightly press the oil cylinder positioning blocks 71, the positions of the pressing blocks 73 on the two sides are adjusted, so that the telescopic oil cylinder 42 is located in the middle of the suspension arm assembly 3, at the moment, one person needs to adjust the telescopic oil cylinder after the telescopic oil cylinder is adjusted, and one person checks whether the. After the adjustment is finished, the hexagon bolt 74 is screwed into the unthreaded hole of the pressing block 73 and the threaded hole of the oil cylinder positioning block 71, the pressing block 73 is positioned, the telescopic oil cylinder 42 and the suspension arm assembly 3 are fixed, the integral installation operation is convenient to implement and accurate in positioning, the phenomenon that the integral winch main body 4 cannot shake when lifting goods can be guaranteed, and the inner hexagon is arranged at the top of the pressing block 73, so that the pressing block 73 can be screwed into the reinforcing plate 72 manually.

In order to further increase the telescopic length of the control lifting rope 46 and reduce the overall width of the boom assembly 3 without changing the maximum telescopic length of the telescopic cylinder 42, a second front wheel set 432 and a second rear wheel set 412 are provided between the first front wheel set 431 and the first rear wheel set 411, as shown in fig. 10, wherein the second front wheel set 432 is mounted on the second mounting plate 43, as shown in fig. 9, the second rear wheel set 412 is mounted on the first mounting plate 41, the number of wheels of the second front wheel set 432 is the same as that of the second rear wheel set 412, in order to ensure that the lifting rope 46 wound on each wheel set does not affect each other, the wheel diameters of the second front wheel set 432 and the second rear wheel set 412 are both smaller than those of the first front wheel set 431 and the first rear wheel set 411, and a set of the second front wheel set 432 and the second rear wheel set 412 are added, on the premise that the telescopic cylinder 42 moves the same distance, the lifting rope 46 can increase the telescopic distance by several times. As shown in fig. 18A, the lifting rope 46 sequentially passes through the second rear wheel set 412, the second front wheel set 432, the first rear wheel set 411 and the first front wheel set 431, then passes through the first rear wheel set 411, and then extends out of the boom assembly 3, passes through the first fixed pulley 47 and the second fixed pulley 45, and then is connected to the hook 5. The suspension rope 46 is firstly wound between the second rear wheel set 412 and the second front wheel set 432, and then wound onto the first wheel set after the number of wheels on the second wheel set is finished, the winding sequence between the second rear wheel set 412 and the second front wheel set 432 is from outside to inside, and the winding sequence between the first front wheel set 431 and the first rear wheel set 411 is from inside to outside, so that the suspension rope 46 wound out of the first rear wheel set 411 extends out of the suspension arm assembly 3 from the outside of the wheel set, and the winding blockage between the suspension ropes 46 of all sections is avoided. When the winch main body 4 has only the first front wheel set 431 and the first rear wheel set 411, the winding sequence of the lifting rope 46 on the first front wheel set 431 and the first rear wheel set 411 is from inside to outside, and the lifting rope 46 wound out of the first rear wheel set 411 also extends out of the boom assembly 3 from the outside of the wheel sets.

An example pulley block mechanism is as follows:

1. an example of the distribution of the wire ropes of the pulley block mechanism including only the first front wheel group 431 and the first rear wheel group 411 is as follows: as shown in fig. 22, the first rear wheel set 411 is composed of three pulleys B1, B2 and B3, the first front wheel set 431 is composed of two pulleys F1 and F2, and the distribution rule of the steel wire ropes is as follows: the free end of the wire rope 46 extends from 43 backwards, first around the innermost B1, then around the innermost F1, then around B2, then around F2, finally around B3, and out of the boom 3 forwards after passing around B3.

2. When the pulley block mechanism comprises a first front wheel set 431, a first rear wheel set 411, a second rear wheel set 412 and a second front wheel set 432, the distribution examples of the steel wire ropes are as follows: as shown in fig. 23, the first rear wheel set 411 is composed of three pulleys B1, B2, and B3, the first front wheel set 431 is composed of two pulleys F1 and F2, the second rear wheel set 412 is composed of two pulleys B1 and B2, and the second front wheel set 432 is composed of two pulleys F1 and F2.

The distribution rule of the steel wire ropes is divided into a first winding stage and a second winding stage:

a first winding stage: the free end of cable 46 extends from second mounting plate 43 back around outermost B1, then around outermost f1, then around B2, then around f2 and extends towards B1.

And a second winding stage: the steel rope from F2 passes around the innermost B1, then the innermost F1, then B2, then F2, and finally B3, and then B3 to extend out of boom 3.

The two lifting ropes 46 of the pulley block mechanisms on the two sides are respectively and fixedly installed on the second installation plate 43, in order to facilitate manufacturing and installation, the lifting ropes 46 of the pulley block mechanisms on the two sides are the same, the middle position of the lifting rope 46 is fixed at the bottom of the second installation plate 43 through a fastening device, the two lifting ropes 46 respectively positioned on the pulley block mechanisms on the two sides are equal in length and are connected to the lifting hook 5, and the pulley block mechanisms on the two sides can bear the same pulling force when lifting goods. As shown in fig. 12, the fastening device includes a rope frame 61, a rope pressing block 62, an oblique iron 63 and a fastening bolt 64, the bottom of the second mounting plate 43 is further provided with a mounting groove 65 matched with the fastening device, wherein one end of the mounting groove 65 is a first inclined surface 66 matched with the oblique iron 63, and the oblique iron 63 is mounted in a matching manner with the first inclined surface 66 through the fastening bolt 64. The other end of the mounting groove 65 is fixedly provided with a rope frame 61, and a rope pressing block 62 is arranged between the rope frame 61 and the inclined iron 63. As shown in fig. 13, two sides of the rope frame 61 are provided with first through holes 611 matched with the lifting ropes 46, a projection 612 is provided at a middle position of the rope frame 61 near one end of the rope pressing block 62, a second through hole 613 matched with the lifting ropes 46 is provided on the projection 612, the second through hole 613 is perpendicular to the first through hole 611, and the middle position of the lifting ropes 46 is located in the projection 612. One end of the rope pressing block 62 close to the rope frame 61 is provided with a pressing groove 621 matched with the second through hole 613, a through groove 623 matched with the bump 612 is formed between the pressing grooves 621, one end of the rope pressing block 62 close to the wedge 63 is provided with a second inclined plane 622 matched with the wedge 63, when the wedge 63 is pressed by rotating the fastening bolt 64, the wedge 63 moving towards the inside of the installation groove 65 can push the rope pressing block 62 to move the rope pressing frame 61, so that the pressing groove 621 on the rope pressing block 62 presses and fixes the lifting rope 46 in the second through hole 613, and the fixing of the lifting rope 46 and the second installation plate 43 is completed.

On the premise that the lifting ropes 46 of the pulley block mechanisms on the two sides are the same, if the built-in pulley block trolley stops at a fixed position to lift the rows of goods, when the goods are far away from the position of the built-in pulley block trolley, the lifting ropes 46 need to be lengthened to move the lifting hooks 5 to the positions of the goods, but when the goods are lifted, the lifting ropes 46 on the two sides are in an inclined state, the force applied to the lifting ropes 46 on the two sides is unbalanced, the installation strength of the lifting ropes 46 on the two sides can be seriously influenced after long-time use, even the lifting ropes fall off, in order to avoid the above situation, as shown in figure 14, a horizontally arranged third pulley 67 is arranged at the bottom of the second installation plate 43, the lifting ropes 46 are wound on the third pulley 67, when the lifting ropes 46 are in an inclined state to lift the goods, the lifting ropes 46 on the two sides are the same and can rotate along with the third pulley 67, so that the lengths of the lifting ropes 46, and subjected to the same pulling force.

Further, as shown in fig. 15 and 16, the hook 5 includes a hook body 51, the hook body 51 is installed in the first counterweight iron 52 in a matching manner, the second counterweight iron 53 is installed on the first counterweight iron 52 through a bolt, a receiving disc 54 is arranged between the first counterweight iron 52 and the second counterweight iron 53, a gap is left between the receiving disc 54 and the second counterweight iron 53, three blocks 55 are installed at the bottom of the second counterweight iron 53, a wedge 56 is arranged between the two blocks 55, second pressing plates 57 are fixedly installed at the bottoms of the blocks 55 and the wedge 56, a third through hole 58 matched with the lifting rope 46 is further formed in the second counterweight iron 53, and the lifting rope 46 can be fixed on the second counterweight iron 53 by the wedge 56 after passing through the third through hole 58.

The transmission mechanism between the driving wheel 14 and the control handle 2 may be an existing screw nut transmission mechanism or a belt transmission wheel transmission mechanism, and for convenience of installation and accurate control, as shown in fig. 17, the transmission mechanism includes a vertical shaft 21 installed on the control handle 2, a first gear 22 is installed at the bottom of the vertical shaft 21, a first rack 23 meshed with the first gear 22 is installed on the base 1, a second gear 24 is installed on a rotating shaft of the driving wheel 14, a second rack 25 meshed with the second gear 24 is installed on the base 1, wherein the first rack 23 and the second rack 25 are fixedly connected, and a guide plate 26 matched with the first rack 23 and the second rack 25 is further arranged on the base 1. The driving wheel 14 can be driven to rotate synchronously by rotating the control handle 2 through the vertical shaft 21, the first gear 22, the first rack 23, the second rack 25 and the second gear 24 in turn, wherein the transmission mechanism can also be replaced by the existing electronic steering gear.

The technical solution of the present invention is not limited to the embodiments of the present invention. The technical contents not described in detail in the present invention are all known technologies.

Claims (9)

1. The utility model provides a built-in assembly pulley trolley, includes base (1) and davit assembly (3), wherein davit assembly (3) articulated installation on base (1), its characterized in that: comprises a control handle (2), the front end of a suspension arm assembly (3) is provided with a lifting hook (5), a lifting cylinder (15) is hinged between the suspension arm assembly (3) and a base (1), the front end of the lower side of the base (1) is provided with a steering mechanism (13), the rear end of the lower side of the base (1) is provided with a driving wheel (14), the driving wheel (14) is connected with the control handle (2) through a transmission mechanism, the base (1) is also provided with a hydraulic station (12), the hydraulic station (12) can control the steering mechanism (13) to steer, the steering mechanism (13) comprises two steering wheels (131), the steering wheels (131) are all arranged on the base (1) through rotating shafts (132), connecting plates (133) are fixedly arranged on the rotating shafts (132) on the lower side of the base (1), and a same transmission rod (134) is hinged between the two connecting plates (133), a steering oil cylinder (135) is hinged to the lower side of the base (1), the end of a piston rod (136) of the steering oil cylinder (135) is hinged to the transmission rod (134), and the piston rod (136) can drive the steering wheels (131) on two sides to synchronously steer when stretching.

2. The trolley with built-in pulley block as claimed in claim 1, wherein: the suspension arm assembly (3) comprises a first suspension arm (31) hinged on a base (1), a lifting oil cylinder (15) is hinged between the first suspension arm (31) and the base (1), a second suspension arm (32) capable of moving along the first suspension arm is installed in the first suspension arm (31) in an internal fit mode, a limiting plate (36) is installed at the upper end, extending out of the first suspension arm (31), of the second suspension arm (32), a driving oil cylinder (35) is installed between the limiting plate (36) and the first suspension arm (31) in a hinged mode, a third suspension arm (33) capable of moving along the third suspension arm is installed in the second suspension arm (32) in an internal fit mode, a fourth suspension arm (34) capable of moving along the fourth suspension arm is installed in the third suspension arm (33) in an internal fit mode, a lifting hook (5) is arranged at the upper end, extending out of the third suspension arm (33), and a first driven device is installed between the second suspension arm, the first driven device comprises a first pulley (321) fixedly arranged in the second suspension arm (32), a first transmission rope (322) is wound on the first pulley (321), one end of the first transmission rope (322) is fixedly arranged on the first suspension arm (31), the other end of the first transmission rope (322) is fixedly arranged on the third suspension arm (33), a second driven device is arranged between the third suspension arm (33) and the fourth suspension arm (34), the second driven device comprises a second pulley (331) fixedly arranged in the third suspension arm (33), a second transmission rope (332) is wound on the second pulley (331), one end of the second transmission rope (332) is fixedly arranged on the second suspension arm (32), the other end of the second transmission rope (332) is fixedly arranged on the fourth suspension arm (34), and when the second suspension arm (32) is pushed by the driving oil cylinder (35) to extend out of the first suspension arm (31), the third boom (33) can synchronously extend out of the second boom (32), and the fourth boom (34) can synchronously extend out of the third boom (33).

3. The trolley with built-in pulley block as claimed in claim 1, wherein: the hoisting machine comprises a hoisting machine main body (4) arranged inside a boom assembly (3), the hoisting machine main body (4) comprises a first mounting plate (41) fixedly arranged inside the boom assembly (3), a telescopic oil cylinder (42) is arranged on the first mounting plate (41), a second mounting plate (43) is fixed on a piston rod of the telescopic oil cylinder (42), the second mounting plate (43) can move inside the boom assembly (3), a folding arm (44) is also fixedly arranged at the front end of the boom assembly (3), a first fixed pulley (47) and a second fixed pulley (45) are arranged on two sides of the folding arm (44), pulley block mechanisms are respectively arranged on two sides of the first mounting plate (41) and the second mounting plate (43), each pulley block mechanism comprises a first front wheel block (431) arranged on the side surface of the second mounting plate (43) and a first rear wheel block (411) arranged on the side surface of the first mounting plate (41), the number of wheels of the first rear wheel set (411) is one more than that of the first front wheel set (431), lifting ropes (46) are fixedly mounted on two sides of the second mounting plate (43), the lifting ropes (46) firstly wind around the first rear wheel set (411), then wind around the first front wheel set (431) and then wind back to the first rear wheel set (411), and then the lifting arm assembly (3) is stretched out to be connected to a lifting hook (5) after being wound around a fixed pulley (47) and a second fixed pulley (45).

4. A trolley with built-in pulley block according to claim 3, characterized in that: the rotating shaft of the first rear wheel set (411) is hinged on the suspension arm assembly (3), two groups of locking and positioning devices are arranged between the telescopic oil cylinder (42) and the suspension arm assembly (3), each group of locking and positioning devices comprises an oil cylinder positioning block (71) fixedly arranged on the telescopic oil cylinder (42), corresponding to the position of the oil cylinder positioning block (71), a reinforcing plate (72) is arranged on the suspension arm assembly (3), a pressing block (73) is matched with the inner thread of the reinforcing plate (72), the pressing block (73) can rotate to press the oil cylinder positioning block (71), a hexagonal bolt (74) is arranged in the pressing block (73), a screw hole matched with the hexagonal bolt (74) is formed in the oil cylinder positioning block (71), a first pressing plate (75) is arranged between the end part of the hexagonal bolt (74) and the reinforcing plate (72), the hexagon bolt (74) can rotate to enter the cylinder positioning block (71) to fix the telescopic cylinder (42) and the suspension arm assembly (3).

5. A trolley with built-in pulley block according to claim 3, characterized in that: a second front wheel set (432) and a second rear wheel set (412) are arranged between the first front wheel set (431) and the first rear wheel set (411), wherein the second front wheel set (432) is installed on a second installation plate (43), the second rear wheel set (412) is installed on a first installation plate (41), the numbers of wheels of the second front wheel set (432) and the second rear wheel set (412) are the same, the diameters of the second front wheel set (432) and the second rear wheel set (412) are smaller than those of the first front wheel set (431) and the first rear wheel set (411), a lifting rope (46) sequentially bypasses the second rear wheel set (412), the second front wheel set (432), the first rear wheel set (411) and the first front wheel set (431), and then bypasses the first fixed pulley (47) and the second fixed pulley (45) outside the lifting arm assembly (3) and then is connected to a lifting hook (5).

6. A trolley with built-in pulley block according to claim 3, characterized in that: the lifting rope (46) of the pulley block mechanisms on the two sides is the same, the middle position of the lifting rope (46) is fixed at the bottom of the second mounting plate (43) through a fastening device, the fastening device comprises a rope frame (61), a rope pressing block (62), an inclined iron (63) and a fastening bolt (64), a mounting groove (65) matched with the fastening device is further formed in the bottom of the second mounting plate (43), a first inclined plane (66) matched with the inclined iron (63) is formed in one end of the mounting groove (65), the inclined iron (63) is matched with the first inclined plane (66) through the fastening bolt (64), the rope frame (61) is fixedly mounted at the other end of the mounting groove (65), the rope pressing block (62) is arranged between the rope frame (61) and the inclined iron (63), first through holes (611) matched with the lifting rope (46) are formed in the two sides of the rope frame (61), a lug (612) is arranged at the middle position of the rope frame (61) close to one end of the rope pressing block (, the lug (612) is provided with a second through hole (613) matched with the lifting rope (46), the second through hole (613) is perpendicular to the first through hole (611), one end, close to the rope frame (61), of the rope pressing block (62) is provided with a pressing groove (621) matched with the second through hole (613), a through groove (623) matched with the lug (612) is formed between the pressing grooves (621), one end, close to the wedge (63), of the rope pressing block (62) is provided with a second inclined plane (622) matched with the wedge (63), and when the fastening bolt (64) is rotated to press the wedge (63), the pressing groove (621) in the rope pressing block (62) can press and fix the lifting rope (46) in the second through hole (613).

7. A trolley with built-in pulley block according to claim 3, characterized in that: the lifting rope (46) of the pulley block mechanisms on the two sides is the same, the third pulley (67) which is horizontally arranged is installed at the bottom of the second installation plate (43), and the lifting rope (46) is wound on the third pulley (67).

8. A trolley with built-in pulley block according to claim 3, characterized in that: lifting hook (5) are including lifting hook body (51), lifting hook body (51) cooperation is installed in first counter weight iron (52), install second counter weight iron (53) through the bolt on first counter weight iron (52), be equipped with between first counter weight iron (52) and second counter weight iron (53) and accept dish (54), leave the space between accepting dish (54) and second counter weight iron (53), three dog (55) are installed to the bottom of second counter weight iron (53), be equipped with drift (56) between two dog (55), equal fixed mounting in dog (55) and drift (56) bottom has second clamp plate (57), still seted up on second counter weight iron (53) with lifting rope (46) matched with third through-hole (58), lifting rope (46) pass third through-hole (58) can be fixed on second counter weight iron (53) by drift (56).

9. The trolley with built-in pulley block as claimed in claim 1, wherein: drive mechanism installs first gear (22) including installing vertical axis (21) on control handle (2), vertical axis (21) bottom, installs first rack (23) with first gear (22) engaged with on base (1), install second gear (24) in the pivot of drive wheel (14), install second rack (25) with second gear (24) engaged with on base (1), wherein first rack (23) and second rack (25) fixed connection still are equipped with on base (1) with first rack (23) and second rack (25) matched with deflector (26).

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